Any feedback on this suggestion?

I would really like to see 4  features here :

1. clone existing exercise as a starting point for a new custom exercise.

2. Implement linking medium , hard easy variations for custom exercises.

3. Would love to see custom exercises automatically create 3 variants for it (easy, medium, regular/hard). 

4. Program should automatically populate and adjust weights for these variations when a custom exercise is swapped in.